In 2013, A. Lange & Söhne introduced the Grand Lange 1 “Lumen”, a watch with a semi-transparent sapphire crystal dial that exposes the ingenious disc configuration of the Lange outsize date. It was followed a year later by the Grand Lange 1 Moon Phase with a prominent in-dial moon-phase display that reproduces the lunations with an accuracy of 99.998%. Now, the Grand Lange 1 Moon Phase “Lumen” combines these two remarkable accomplishments in one watch.
Different from Lange’s previous moon-phase models with solid gold lunar discs, the Grand Lange 1 Moon Phase “Lumen” has a disc made of glass. Initially, its surface is treated with a patented coating process. In a second step, a laser is used to cut out 1,164 stars and the moon. Thanks to the luminous compound behind the lunar disc, they shimmer with vibrant radiance. The large moon-phase display occupies a prominent position on the main dial. Once properly set, it only needs to be corrected by one day every 122.6 years.
Featuring all of the quality highlights of an A. Lange & Söhne timepiece, the manually wound calibre L095.4 is elaborately finished and assembled twice. Presented in a limited edition of 200 watches, this model comes in a 41-millimetre platinum case.